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Mediasonic > 
Item#: N82E16817576016

Mediasonic H21-su3 2.5" USB 3.0 External Enclosure

  • 2.5"
  • USB 3.0
  • Up to 1TB
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Mediasonic ProBox SuperSpeed External Hard Drive Enclosure can instantly convert your 2.5" SATA hard disk drive to an external drive and provides a portable plug-and-play solution for both PC and Mac. The transfer rate is up to 5.0 Gbps via USB 3.0 and 480mb/sec via USB 2.0 connection. The external drive provides the portable storage space for your music, photo, video, and data file.

  • newegg USB 3.0 Interface SuperSpeed USB 3.0 delivers up to 5Gbps bandwidth which is around 10 times the bandwidth of the current USB 2.0, allowing for ultra-fast transfers of high definition movies and videos, as well as various other large capacity file formats. USB 3.0 is also Plug and Play and backward compatible with USB 2.0 /1.1 components.
  • newegg LED indicator This External Hard Drive Enclosure features a LED indicator to indicate power and data transfer status.

Learn more about the Mediasonic H21-su3

Model

Brand
Mediasonic
Model
H21-su3

Spec

Size
2.5"
Internal Interface
SATA
External Interface
USB 3.0
Maximum Capacity (per Bay)
Up to 1TB
Fan
No
Specifications
Supporting Hard Disk Drive
All brand of 2.5" SATA HDD up to 1000GB (9.5mm slim type)

Partition Format
NTFS or FAT 16 / 32
Support multiple partition

Power
USB bus power
Features
USB 3.0 SuperSpeed (Backwards compatible with USB 2.0 / 1.1)

Maximum Transfer rate up to 5.0 Gbps via USB 3.0

Maximum Transfer Rate up to 480Mbps via USB 2.0

Hot-swappable

Fits all brand of 2.5" SATA hard disk drive (9.5mm slim type)

LED status indicator

Plug & Play for PC / Mac platform

Compatibility

Operating Systems Supported
Microsoft Windows XP / VISTA / 7
Mac OS

Dimensions & Weight

Dimensions
3.15" x 5.19" x 0.72"
Weight
0.11 lbs. (excluding hard disk drive)

Packaging

Package Contents
H21-SU3 Enclosure

USB 3.0 Cable (1M)

Screws for hard drive

Quick Info

Warranty

  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year


Customer Reviews of the Mediasonic H21-su3

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  • Thomas L.
  • 4/3/2014 1:18:02 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsworked without hassles

Pros: popped in a hard drive and it worked.
micro usb 3.0 cable included

Cons: needs a screwdriver to open up the case

Did you find this review helpful? Yes No

  • Samuel k.
  • 3/14/2014 4:21:56 AM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

4 out of 5 eggsQuick review an thoughts

Pros: Relatively fast:
I tested the speeds using CrystalDiskMark 3..3 x64 on a Toshiba MQ01ABD075 HDD the results are as such Sequential(Read 105.1 MB/s Write 104.9 MB/s) 512K(Read 35.96 MB/s Write 31.39 MB/s) 4K(Read 0.508 MB/s Write 1.217 MB/s) 4K QD32(Read 0.561 MB/s Write 1.130 MB/s)
Standard Micro USB 3.0 connector with backwards compatibility with Micro USB 2.0.
Simple installation with only one screw.
Adequate build quality.

Cons: Well first thing is that its only a SATA 2 connection on the on board chip, but that should pose any problems with bottle necking as it is not the limiting factor.
The next thing is something to do with the build, as I have already mentioned the build quality is adequate but the plastic is a little brittle so dont go dropping it(but I would say that for any enclosure). Another thing is the padding inside it is plenty enough to securely hold the drove in the enclosure but it will not do much in the event of an impact.

Other Thoughts: Over all I am very happy with the product and feel that for the price it is quite satisfactory. For my few cons most are easily fixed with a minutes work. Now you cant fix the SATA 2 interface but that is more me being a bit of a snob than a real problem it is more than enough for most peoples usage and as I have said it will not be the limiting factor in the device. As for the padding you can fix it with a little adhesive backed foam pad but be sure not to use too much as this enclosure is plastic and it could cause a over. heating problem.

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  • Mathew L.
  • 3/12/2014 3:12:07 AM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year

1 out of 5 eggsI call it "The corruptor!"

Pros: Price, USB 3.0 speed, Aesthetics

Cons: This Enclosure managed to corrupt files on two of my HDD's to the point where one had to be completely reformatted. I thought it was a problem with my drive at first, but when the exact same started happening on a second I threw out the enclosure. You get what you pay for I suppose.

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  • Anonymous
  • 2/6/2014 9:06:10 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggs

Pros: Inexpensive; no absurd lights; very compact; simple assembly - single screw; cable is 52cm long

Cons: Inexpensive materials used (plastic); speeds slower than similar enclosures owned; the B connector is slightly recessed which could cause the connector to fail to fully seat or encourage a Joe Turbo maneuver from forceful plug insertion.

Other Thoughts: Unit was able to maintain 170 MB/s transferring 50GB file group containing files ranging from 10GB to less than 1MB. If the unit had not been on sale at time of purchase my choice would have been a competitor. The quality and controller are on par w/ enclosures in the sub-$15 range.

1 out of 1 people found this review helpful. Did you? Yes No

  • Mike D.
  • 2/5/2014 10:05:17 PM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsPretty good

Pros: Had a spare laptop drive so I got this. Seems sturdy and cable fits well. Worth the money.

Cons: None so far

Did you find this review helpful? Yes No

  • Carlos M.
  • 8/20/2013 6:19:57 AM
  • Tech Level: Somewhat High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsgood enclosure

Pros: works fine. nice USB3. fast.

Cons: none so far

Did you find this review helpful? Yes No

  • Nick H.
  • 7/17/2013 1:57:30 PM
  • Tech Level: Somewhat High
  • Ownership: less than 1 day

1 out of 5 eggsAvoid

Pros: Quick to assemble.

Cons: Stops copying after just a few minutes. Impossible to copy large files or large groups of files.

0 out of 2 people found this review helpful. Did you? Yes No

  • Anonymous
  • 6/11/2013 9:35:22 AM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

3 out of 5 eggsHalf Way Good

Pros: USB 3.0, easy entry low price.

Cons: Ordered 2 of them but only one of the worked. One was D.O.A., it would spin up the drive, but not ever initialize. The second unit works great. 50% yield...

Other Thoughts: Order two of them if you want one that works :)

0 out of 2 people found this review helpful. Did you? Yes No

  • RameshKumar N.
  • 6/9/2013 10:24:43 AM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

2 out of 5 eggsWeakest structurally

Pros: Works

Cons: Seems like brittle plastic, may not survive even one fall. I have made few bad purchases like this, and this one enclosure is worst.

Cable is so short you have to glue the enclosure to PC. Barely twice the length of enclosure

Other Thoughts: Save money and buy a metal enclosure and a long cable too. Note you can not swap this cable with any other USB cable because connector is not that popular.

Did you find this review helpful? Yes No

  • Adam L.
  • 6/3/2013 7:24:52 PM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

3 out of 5 eggs3Gb/s cap not 5Gb/s!!

Pros: Enclosure is small, although not the smallest I have used, and simple to put together. Data transfer speeds are pretty good, much better than my USB 2.0 enclosure.

Cons: The included cable is short and not ver flexible, bad combo. The cord also does not fit tightly into the enclosure. I have bumped it a couple times causing the drive to suddenly shut off. Also the screw that holds the enclosure together is made of soft metal so be careful not to strip it.

Other Thoughts: It is hard to see in the pictures but this enclosures on-board controller is only SATA 2. This means that speeds will top out at 3Gb/s not 5Gb/s as advertised. In order to reach USB 3.0 top speeds the controller needs to be upgraded by the manufacturer to SATA 3 (6Gb/s). In reality this means absolutely nothing meaningful because actual speeds will be well below those marks and all SATA connectors are compatible. However, it is worth pointing out for those that are planning on keeping this drive for awhile or using it with SSDs (most of which are SATA 3).

3 out of 3 people found this review helpful. Did you? Yes No

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Computer Hardware > 
Hard Drives > 
Hard Drive Enclosures > 
Mediasonic > 
Item#: N82E16817576016
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